Senate Democrats are about to burn the midnight oil to make their case on climate change.

The previously rumored all-night session on the effects of climate change will take place Monday, Sen. Sheldon Whitehouse confirmed.

“It’s locked in,” the Rhode Island Democrat told CQ Roll Call. “An all-nighter is an all-nighter. We’re going to go all the way through to eight or nine in the morning or whenever they need to clean it up for the next day.”

That would clearly meet the established definition of an all-night session.

Sen. Brian Schatz, D-Hawaii, and Whitehouse are coordinating the campaign.